Capacitive Touch Buttons?
Engadget's review and another one I read somewhere talk about capacitive touch buttons around the track pad.
Quote: While the old Bolds lived up to their name by being a little rounded, kind of chubby, a bit bulbous, the new model is rather more svelte and sophisticated. Looking purely at its face it's hard to detect that anything has changed. You still have the same portrait QWERTY layout with the same basic button scheme, but where once lived a trackball now an optical trackpad sits. That's flanked by a solid bar of backlit capacitive touch buttons, newly monochrome and flush with the display. A curving bit of chrome separates those buttons from the keyboard, as before.
Mine certainly didn't have these - they were up market versions of a basic curve. Anyone got the mystery capacitive ones?